Priming-cup



W. W. HARRIS.

PRIM ING CUP. APPLICATION FILED OCT. 25, 1918. RENEWED AUG. 30. I919.

Patented May 11, 1920.

- INVENTOR I UNITED STATES PATENT OFFICE.

WILL A w. HARRIS, or PONTIAC, MICHIGAN,

PRIMING-CUP.

7 Specification of Letters Patent. Patented Blay 11, 1920.

Original application filed January 12, 1918, Serial No. 211,652. Divided and this application filed October 25, 1918, Serial No. 259,610. Renewed. August 30, 1919. Serial No. 320,821.

' priming cups for gas and other explosive engines comprising a body shell having a fluid receiving chamber constructed at its top to provide a fluid receiving opening and constructed at its bottom to provide a cooperating discharge opening, and a self-centering valve for effecting closure of the fluid 1 .discharge opening and loosely retained within the cup for compensating for lateral movement of the valve relatively to the body shell."

This application is a divisional application of my copending'application Serial No.

211,652, filed by me on the 12th day of January, 1918, and entitled Priming cup.

Further features and objects of the present invention will be more fully understood from the following description and the accompanying drawings, in which Figure 1 is a side elevation of a priming cu embodying my invention;

ig. 2 is a vertical central sectional elevation of Fig. 1;

Fig. 3 1s a vertical sectional central elevation; and

Fig; 4 is a detail top plan view of an element of the construction shown in Fig. 3.

Referring to the embodiment shown in 7 Figs. 1 and 2,'the body shell 1 is constructed interiorly' to provlde for the fluid receiving chamber 2 constructed at its top to receive gasolene or other priming fluid. The body shell 1 is provided at its lower end with the fluid discharging passage 4, preferably having a valve seat. The receiv ng chamberz2,

as shown, may be of an inner shell 7 suitably retained at its upperedge within the body shell 1 as by crimping or the like. Exteriorly, the body shell '1 is of the usual contour and may be provided with the threading 16, for threaded insertion within the shell of the cylinder of the explosive engine.

As shown, the valve 5 may be provided with the val e closure 2.2 a p e po 1 ing means ofthe valve ing moved upwardly to close the discharge opening 4 in sealing relation.

Means are provided for loosely mounting the valve stem 5 within the body shell 1 and in the particular embodiment shown in Figs. 1 and 2, such loosely mounting means comprises the internally threaded member 10 threadedly connected withthe external thread 13 on the valve stem 5, said member 10 being loosely retained within the inner shell 7 by means of suitable projections 11 respectively extending within suitable openings 12 in the inner shell 7. The valve stem 5 projects through the opening 14 upwardly of the body shell 1 and may be provided with suitable means for manipulating the valve stem 5, as by bending the valve stem 5 asindicated at 17. The opening 14 is relatively large as compared with the cross sectional area of the valve stem 5, .to' thereby permit passage of the gasolene or other priming fluid from the chamber 2 into the discharge passage of the priming cup.

Upon turning the valve stem 5 by means of the manipulating portion 17 to open the discharge opening 4, the valve 22'is moved downwardly and the member 1O is retained loosely relatively to the inner-shell 7. Upon turning the valve stem v5 to close the valve 22 against the valve seat 4, the member 10 by reason of its compensating lateral movement effects the self-centering of the valve in its I ternally threaded and adapted to be threadedly connected with the external threading 13 of the valve stem v5. The saddle 23 1s further provided with the suspending lugs 24 respectively loosely pro ecting through suitable openings in the body shell, as shown. Otherwise the modification shown in Figs. 3 and 4 corresponds similarly to the modification shown in Figs. 1 and 2 and like parts have been designated by like reference numbers. I I 1 7 By reason of the aforesaidloosely mountstcm relative to the casing of the priming cup, as will be apparent upon slightly opening the the valve when testing the cylinders of the engine by V opera-ting. the engine, in the usual manner, my invention serves as an indicator,whether or not the spark plugs of the respective cylinders of the engine are in operating condition, namely, in each of the cylinders in which the spark plug is in sparking order, the valve stem of its priming cup will be vibrated, whereas the cylinder whose spark plug is not in good sparking order,- the valve stem of its priming cup will be -q'uies cent.

=It will be noted that the aforesaid embodiments of my invention are readily manufactured by means of simple stamping machines or a simple lathe, and eliminates the relatively high expense and the matter-of skilled labor required in providing-theusual internally threaded, fixed valve closure for the-priming cup.

The self-centering characteristics of my invention obviates the necessity ofabsolute perfect fit in construction and in'assembling "and further aflords self adjustment 'upon "Wear ofthe movableparts or in the event ,ofbendingor otherwise misshaping any rt 'incident'to use. y r 7' Whereas I have described by inventionby reference to specific forms therjeoflit will -be' understood that many changes and modifications may be made without departing from the spirit of the invention as defined by the appended claims.

I claim: l

1. A priming cup for-gas engines coinprising a body shell having a fluidreeei-ving chamber and a valverseating opening with a passage therebetween, said shell further having one or -more openings, an

internally threaded -member, one or 'more lugs on sa1d member and extending into said one or more openings for retaining-sa1d member Within said shell, an externally threaded-spindle in substantially accurately threaded relation with said internally threaded -mem'ber, said spindle projecting through "said valve-seating opening, means disposed on said spindle-forming a valve closure for said-valveseating opening and meansfor'mounting said internally threaded member and said externally threaded spindleto provide lateral movement relative to -said body-shell to an extent sufiicient to ef- -fect perfect al-inement of said valve -clo-' sure means with said valve-seating opening {when--sa1d spindle ismoved to closmgpo- '2. In apriming cup for gas =en'gines,=the comb nation of a cup shell construeted 1nteriorly-v to provide an inner fluid receiving chamber, said cup shell being -..constructed {at its itopto provide a fluid' receiving inlet, said-cup shell being turther. constructed at its bottom to provide a cooperating-fluid V discharge opening, .a self-centering :valve constructed to be moved :upwardl-ytoeffect a closure of said fluid dischargev opening,

vand valve actuating mechanism comprising two substantially accurately co-threaded members, means for actuating one of sa1d th leaded members and means for loosely retaming the other of said threaded members chamber and a valve-seating opening with a passage therebetween, aflsecondary inner shell, means for securing saidinner shell to said body shell, an internally threaded member loosely mounted withinsaidsecondary shell, an externallycthreaded :spindle in substantially accurately' threaded relation with said internally-threaded member, said spindle projecting th'rough :said valve-seating opening, means disposed ion said spindle torminga valve closure-when said spindle is moved upwardly into engagement with the 'lower'side of said valveseating opening, said internally 1 threaded member andisaid externally zthreadedwspindle havingalateral movement relative .to said body shell to an extent sufficient to effect perfect alinement of said valve closure means with said valve=seating opening.

4. :A priming cup comprising a bodyshell constructed interiorly' to provide an inner .i V

fluid receiving chamber and at its top to provide a fluid receiving opening :and further' provided with a fluid passage, a closure cooperating with saidFpas'sage, ea spindle controlling said closure and means for loosely mountiugsaid spindle within said body shell, said body shell being further provided with one or more ;openings,:said mounting means comprising anle'lement in substantially accurately threaded relation,

with said spindle and extending into said one ormore openings.

. 5. A priming cup comprising. a body shell constructed, interiorly -t'o.1provi.de an-inn'er fluid receiving-zchambersand at "its top to.

provide a fluid receiving opening and further provided. with a fluid -passa-ge, a closure cooperating withzsaid passage, a spin dle controlling said closure to close zsagid passage upon: upward movement of .said' spindle, vands-means for looselvmounting said spindle within said body-shelhsaid body shell being further provided with one or more openings sa1d mounting means comprising an element in. substantially aoeu-*i Yrately threaded relation vithqsaid spindle andextendmg into said one or morez open- V 'ings.

{6. ,A cup. nomiprising atnnnhe constructed interiorly to provide a fluid receiving chamber and at its top to provide a fluid receiving inlet, said cup shell being further constructed at its bottom to provide a fluid discharge passage, a self-centering valve constructed to be moved upwardly to eiiect closure of said fluid discharge passage and valve actuating mechanism comprising two substantially accurately cothreaded members, said cup shell being provided with one or more openings, one of said threaded members extending into said one or more openings.

7. A priming cup comprising a cup shell constructed interiorly to provide a fluid receiving chamber and at its top to provide a fluid receiving inlet, said cup shell being further constructed at its bottom to provide a fluid discharge passage, a self-centering valve cooperating with said fluid discharge passage and valve actuating mechanism comprising two substantially accurately cothreaded members, said cup shell being provided with one or more openings, one of said threaded members extending into said one or more openings.

In testimony whereof I have signed this specification this twenty-second day of October, 1918.

WILLIAM W. HARRIS. 

